Hand-writing input system

ABSTRACT

A hand-writing input system includes a hand-writing input device and an image capture device. The hand-writing input device includes a penholder, a writing head and an infrared light source. The penholder includes a writing end and an opposite top end. The writing head is arranged on the writing end. The writing head actually writes on paper, and the image capture device picks up the track of the infrared light source or the track of the target of the IR light.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a divisional application of and claims the benefitof U.S. patent application Ser. No. 12/612,053 filed on Nov. 4, 2009,entitled “HAND-WRITING INPUT DEVICE AND HAND-WRITING INPUT SYSTEM”, theentire contents of which are incorporated herein by reference.

BACKGROUND

1. Technical Field

The present disclosure relates to a hand-writing input system.

2. Description of Related Art

With the development of information and communication technology,computers, mobile phones, personal digital assistants and otherelectronic devices are now widely used. Information input, such ascharacters input, is a must have function for such electronic devices.

Information input modes include a keyboard input, a voice input, ahandwriting input, and many others. A typical handwriting input deviceincludes a panel and a stylus. A number of resistors or capacitors areinstalled in the written panel and are arranged in an array. When thestylus touches the written panel, resistances/capacitances of someresistors/capacitors are changed. Thus, a position of the stylus on thewritten panel is sensed according to the change of theresistances/capacitances of the resistors/capacitors. A continuousmovement of the stylus on the written panel can be sensed bycontinuously sensing the changes of the resistances/capacitances.Therefore, movement paths of the stylus are recorded, thus ahand-writing function is achieved.

However, in the above hand-writing input device, information can only berecorded and stored in a memory or storage. When the recorded/storedinformation needs to be converted into hard copy file, the informationhas to be printed from a printer. If the information in the memory orstorage is deleted by accident, it is difficult to be retrieved.

Therefore, a system for hand-writing input are desirable to overcome theabove-described shortcomings.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the present embodiments can be better understood withreference to the following drawings. The components in the drawings arenot necessarily drawn to scale, the emphasis instead being placed uponclearly illustrating the principles of the present embodiments.Moreover, in the drawings, like reference numerals designatecorresponding parts throughout the several views.

FIG. 1 is a schematic, isometric view of a first embodiment of ahand-writing input system, which includes a hand-writing input device.

FIG. 2 is a sectional view of the hand-writing input device of thehand-writing input system in FIG. 1.

FIG. 3 is a schematic, sectional view of a second embodiment of ahand-writing input device.

DETAILED DESCRIPTION

Referring to FIG. 1, a hand-writing input system 100 according to afirst exemplary embodiment includes a hand-writing input device 12, awritten panel 14 and an image capture device 16.

Referring also to FIG. 2, the hand-writing input device 12 includes awriting pen 122 and an infrared (IR) light source 124. The writing pen122 is a writing tool capable of leaving solid or liquidcolor-distinguishable material, such as ink, on a handwriting tracesrecording object, such as a paper or a written panel. The writing pen122 can be a ballpoint pen, a fountain pen, and many others. In thisembodiment, the writing pen 122 is a ballpoint pen.

The writing pen 122 includes a penholder 126 and an exchangeable inkrefill 128. The ink refill 128 includes an ink receiving tube 132 forreceiving writing ink and a writing head 134 installed at one distal endof the ink receiving tube 132. The writing head 134 is hollow and incommunication of the ink receiving tube 132. In use, the writing ink inthe ink receiving tube 132 outflows from one distal end of the writinghead 134 onto a paper or a written panel.

In this embodiment, the penholder 126 is stick-shaped and includes awriting end 142 and an opposite top end 144. In particular, thepenholder 126 has a hollow structure. The ink receiving tube 132 of theink refill 128 is installed in the penholder 126. The writing head 134of the ink refill 128 is exposed out of one distal end of the penholder126 for writing.

The IR light source 124 is fixed adjacent to the writing end 142 of thepenholder 126. In this embodiment, the IR light source 124 is exposedfor emitting IR light to the image capture device 16. Upon conditionswhere the writing end 142 is made of a light-pervious material, the IRlight source 124 can also be embedded in the writing end 142. The IRlight source 124 can be an IR light emitting diode (LED).

The hand-writing input device 12 further includes a cell 148 installedin the top end 144 of the penholder 126, and a switch button 150. Thecell 148 can be a button shaped cell. The IR light source 124 iselectrically connected with the cell 148 via a lead group 146. The leadgroup 146 includes two leads (not shown). One end of the two leads iselectrically connected with two electrodes of the IR light source 124respectively, and the other end of the two leads is electricallyconnected with two electrodes of the cell 148 respectively. The cell 148is configured for providing electric energy to the IR light source 124.It is to be understood that the cell 148 can also be installed at otherpositions of the penholder 126, for example between the writing end 142and the top end 144.

The switch button 150 is set between the writing end 142 and the top end144. The switch button 150 is installed in and extends out of the outersurface of the penholder 126. The IR light source 124 can be switched toan on or off state by pressing and releasing the switch button 150.

The written panel 14 is a flat board for placement of a handwritingtraces recording object. The handwriting traces recording object isconfigured for recording solid or liquid material outflowing from thewriting head 134. In illustrated embodiment, the handwriting tracesrecording object is writing paper 18 as shown in FIG. 1.

The image capture device 16 is an IR sensing device for picking up IRlight emitted from the IR light source 124. An installing stick 160 isfixed on one edge of the written panel 14. In this embodiment, theinstalling stick 160 is perpendicular to the written panel 14. The imagecapture device 16 is installed on the installing stick 160. A viewingfield of the image capture device 16 covers the entire surface of thewritten panel 14. The image capture device 16 can pick up images oflight emitted from the IR light source 124 continuously with a certainfrequency. Therefore, when the IR light source 124 is moved, themovement track of the IR light source 124 can be recorded. Theinformation about movement track can then be transmitted to an outputdevice with a display, such as a computer, a personal digital assistantand a mobile phone.

Referring to FIG. 1, a hand-writing process using the hand-writing inputsystem is described in detail as follows.

Firstly, the switch button 150 is pressed to turn on the IR light source124. The IR light source 124 is positioned facing towards the imagecapture device 16 so that the light emitted from the IR light source 124can be picked up by the image capture device 16.

Secondly, a user holds the hand-writing input device 12 and moves thehand-writing input device 12 on the writing paper 18 such that thewriting head 134 contacts the writing paper 18 to leaves ink traces onthe writing paper 18. Simultaneously, the movement track of thehand-writing input device 12 is picked up by the image capture device 16and transmitted to an output device (not shown), such as a computer.Because the IR light source 124 is positioned close to the writing head134, the movement track of the hand-writing input device 12 is generallyidentical to the ink traces shown on the writing paper 18.

The written panel 14 of this embodiment can be omitted or replaced byother supports, as long as the ink traces can be left on the writingpaper 18 by using the hand-writing input device 12.

In this embodiment, the ink traces can be left on the writing paper 18and movements track can also be recorded. Therefore, both of paper filesand electronic files about the movement of the hand-writing input device12 can be recorded.

Referring to FIG. 3, a hand-writing input device 22 in accordance with asecond exemplary embodiment is provided, differing from the hand-writinginput device 12 only in that switching the on or off state of IR lightsource 124 is realized by pressing the writing head 134. Thedistinguishing features in structure between the hand-writing inputdevice 22 and the hand-writing input device 12 are described as follows.The hand-writing input device 22 further includes a spring member 222fixed in the lens holder 124. The spring member 222 is positionedbetween the distal end of the ink receiving tube 132 and the cell 148.The spring member 222 contacts the distal end of the receiving tube 132and is spaced from the cell 148. The cell 148 has an anode 152 and acathode 154 at an opposite side of the anode 152. The cathode 154 ispositioned facing towards the spring member 222. One end of two leads156 and 158 is electrically connected with two electrodes of the IRlight source 124 respectively. The other end of the lead 156 iselectrically connected with the anode 152. The other end of the lead 158is electrically connected with the spring member 222. The spring member222 is an electrical conductor. A material of the spring member 222 canbe selected from the group consisting of copper, iron, aluminum etc.

The use of the hand-writing input device 22 is described as follows,with replacement of the hand-writing input device 12 of FIG. 1 by thehand-writing 22. When the writing head 134 is pressed on the writingpaper 18 for writing, the ink receiving tube 132 generates a pressure tothe spring member 222 because of the pressing of the writing head 134.The spring member 222 bends and then contacts the cathode 154 of thecell 148 due to the pressure of the ink receiving tube 132. At thistime, the IR light source 124 and the cell 148 form an electric loop,thus the IR light source 124 emits IR light. When the writing head 134withdraws from the writing paper 18, the IR light source 124 switches toan off state. Therefore, when using the hand-writing input device 12 onthe writing paper 18, the image capture device 16 can pick up themovement track of the hand-writing input device 12. When the writinghead 134 is not in use to write on the writing paper 18, the movementtrack of the hand-writing input device 12 cannot be recorded. Thus theink traces on the writing paper 18 can generally correspond to images ofthe movement track of IR light source 124.

It is to be understood that the above-described embodiment is intendedto illustrate rather than limit the embodiments. Variations may be madeto the embodiment without departing from the spirit of the disclosure asclaimed. The above-described embodiments are intended to illustrate thescope of the disclosure and not to restrict the scope of theembodiments.

What is claimed is:
 1. A hand-writing input system, comprising: ahand-writing input device comprising: a penholder comprising a writingend and an opposite top end; a writing head arranged on the writing end,the writing head being capable of leaving color distinguishable traceson an object; an infrared light source positioned on the writing endadjacent to the writing head, the infrared light source comprising twoelectrodes; an ink-receiving tube in communication with the writinghead, the ink-receiving tube being configured for receiving writing ink;a cell in the penholder, the cell being configured for providingelectric energy to the infrared light source, the cell comprising ananode and a cathode at an opposite side of the anode; a push switchcomprising a spring member, the spring member being spaced from thecathode in a natural state thereof; and two leads, one end of each leadelectrically connected with a respective one of the two electrodes ofthe infrared light source, the other end of one of the leadselectrically connected with the anode, the other end of the other leadelectrically connected with the spring member; wherein when the writinghead is pressed on a writing paper for writing, the ink receiving tubegenerates a pressure to the spring member because of the pressing of thewriting head, the spring member bends and then contacts the cathode ofthe cell due to the pressure of the ink receiving tube, thereby theinfrared light source and the cell form an electric loop to enable theinfrared light source to emit infrared light; when the writing headwithdraws from the writing paper, the infrared light source switches toan off state; and an image capture device, the image capture devicebeing configured for picking up image continuously to record themovement track of the infrared light source.
 2. The hand-writing inputsystem of claim 1, further comprising a panel, the image capture devicebeing fixed relative to the panel.
 3. The hand-writing input system ofclaim 2, further comprising an object for recording color distinguishingtraces, the object being positioned on the panel.
 4. The hand-writinginput system of claim 3, wherein the object is paper.
 5. Thehand-writing input system of claim 2, further comprising an installingstick fixed on edge of the panel, the installing stick beingperpendicular to the panel, the image capture device being installed onthe installing stick.
 6. The hand-writing input system of claim 2,wherein a viewing field of the image capture device covers the entiresurface of the panel.